Frittata With Four Flavors - With pork

1 tablespoon olive oil 1 cup diced pancetta 1 onion , diced 2 small red potatoes, in 1/2-inch dice 1 garlic clove , minced 4 large eggs 2 tablespoons[...]

2 slices bacon 1/2 cup chopped onion 1 1/2 cups chopped button mushrooms or 1 1/2 cups sliced button mushrooms 2 eggs 6 egg whites kosher salt fresh ground[...]